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Derive equation of mobility in terms of electric current. |
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Answer» SOLUTION :`rArr` When n number electron moves with VELOCITY `v_(d)`in conductor of cross-section A current I will be, I = nAu `d^(e)` Now, `mu = (v_(d))/(E)` `therefore v_(d) = mu `E `I = nA(mu E)e` `mu = (I)/(n AE e)` SI unit of `mu = (A)/(m^(-3) xx m^(2) xx (V)/(m) xx C)` `= (A)/(m^(-2) VC)` `= m^(2) OmegaC^(-1)` |
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